国光是我国苹果产区的主栽品种之一,但由于普遍存在大小年结果现象,影响到树体的发育和产量的稳定提高。为了寻求克服国光大小年结果的途径,我们于1979年开始本项试验,现将部分试验结果总结如下。 Guoguang is one of the main cultivars of apple-growing areas in China. However, due to the prevalence of annual and annual results, the development of trees and the steady increase of output are affected. In order to seek ways of overcoming the annual results of Guoguang, we started this test in 1979, and the results of some of the tests are summarized as follows.